Retrieving the Affected Links and Affected Objects
This example shows you how to retrieve the AffectedLinks for change objects, and further retrieve the AffectedObjects. Use the following GET request.
URI
GET /Windchill/servlet/odata/ChangeMgmt/ChangeRequests('OR:wt.change2.WTChangeRequest2:250300')?$expand=AffectsLinks($expand=AffectedObjects) HTTP/1.1